Hi Jürgen,
Federated queries don't work on any DBpedia Virtuoso endpoint (except
the german one where I configured a manual workaround). This is due to a
bug in virtuoso dating back to 2011 [1]
I opened a Thread on the DBpedia-Developers list about this issue [2].
In the meantime you can use the German endpoint [3] and run your
queries from there [4].
Cheers,
Alexandru
[1] http://answers.semanticweb.com/questions/10360/virtuoso-federated-query
[2]
http://sourceforge.net/p/dbpedia/mailman/dbpedia-developers/thread/CAC1xrVS643sfUDo%2BTENS1eZf%2BsYqzYyW8jj2NzCZAKJT65KWdw%40mail.gmail.com/#msg32883532
[3] http://de.dbpedia.org/sparql
[4]
http://de.dbpedia.org/sparql?default-graph-uri=&query=SELECT+*+WHERE+%7B%0D%0A+SERVICE+%3Chttp%3A%2F%2Flive.dbpedia.org%2Fsparql%3E+%7B%0D%0A+++%3Faus+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2Fcountry%3E+%3Chttp%3A%2F%2Fdbpedia.org%2Fresource%2FAustria%3E%3B%0D%0A++++++++%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FpostalCode%3E+%3FremotePostCode%0D%0A+%7D%0D%0A%7D&format=text%2Fhtml&timeout=0&debug=on
On 10/09/2014 05:41 PM, Jürgen Jakobitsch wrote:
> any idea why this is not returning anything?
>
> SELECT * WHERE {
> SERVICE <http://live.dbpedia.org/sparql> {
> ?aus <http://dbpedia.org/ontology/country>
> <http://dbpedia.org/resource/Austria>;
> <http://dbpedia.org/ontology/postalCode> ?remotePostCode
> }
> }
>
> this is working fine, when issued directly at the sparql endpoint
> (http://live.dbpedia.org/sparql)
>
> SELECT * WHERE {
> ?aus <http://dbpedia.org/ontology/country>
> <http://dbpedia.org/resource/Austria>;
> <http://dbpedia.org/ontology/postalCode> ?remotePostCode
> }
>
> wkr turnguard
>
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